Scaffold carrier



A. E. CAMP.

SCAFFOLD CARRIER. APPLICATION man 050.29. 1921.

INVENTOR Q ArzhurECamp ATTORNEY Patented J my 25-, 1922.

ARTHUR E. CAMP; ORBINGHAMTON 2NEW YORK.

' SCAFFOLID CARRIER.

Specification of Letters Patent. 2 Pat tented July 25, 11922.

Application filed December 29, 1921..-,-Seria1 No: 525,680.

, To all whom it may concern:

Be it known:that I, An'rHURE. CAMP, a citizen of the United" States, residing at Binghamton, county of'Broo-me, and State of New York, have invented certain new and useful Improvements in Scaffold Carriers, ,OfWhiCh thev following is a specification. i

-This inventionrelatesto scaffold carriers and is particularly adapted for embodiment in so-;calle.d. .traveling scaffold carriers sucl1,for example,,as areemp1oyed by painters, for supporting a sling or platform which should'be arranged, for ready movement transversely, as welloas being. readily raised or lowered.

, ,It is an importantobject of this invention to provide a carrier, of, the character described, individualspecimens of which will beadjustable for cooperation either with thetop of acornice or a parapetwall, with theedge of a pitch or flat roof, with the top of a-metal' stack, with the railing along a balcony or the side of a bridge or ship,,or with many other objects available for supporting, the scaffolds of those whose work necessitates or isffacilitated by the use of such. scaffolds.

V Itis afurther object of this .invention to provide a carrier of the character described which may be readily disposed in extremely compact form so as to facilitate convenient transportation thereof. I

Other objects of this invention arein part apparent and in part specifically pointedout in thefollowing specification.

"This invention consists of certain. features1 of construction and arrangement of parts which can most readily be understood by. reference to the annexed drawing, the like parts in the several views being indicated by like reference characters, and in which Figure 1 illustrates the use of a carrier embodyingthis invention in connection with a ,parapet. wall "Fig.2. 'llustrates' the use of the carrier of Fig. 1 in connection with ametal stack; Fig. illustratestheuse ofcarriers, like that of Figs. 1. and 2, in' connection with a pitch roof;' and 3 Fig; i'show's the parts of the carrierof Figs. fl, 2 and 8 arrangedfor convenient transportation.

'T-The embodiment of this invention disl jl di b e m a win some prises a, suspension bar 21, a transversecarrier bar- 22. a guard or guiding bar 23, roller bars 24,; 24, 24, gussets125, 25,1 25, tie or bra'cewbars 26, 26 and a suitable number of bolts 27 for clamping said parts together in various relationships.

Thels'uspension bar 21' has an eye 31 formed in anend thereof for facilitating attachment thereto of I a scaflfold-as by means of the rope-ILQThe bars 2l, 22,23, and 24 each have a. seriesEOf ope ing 32 there th,rough in spaced relationship lengthwise thereof, for receiving bolts, such as the bolts 27 ,7 used for clamping said. bars oneto an other, in; desired relationships. I

f The bars" 241;, -24., .24 .ea hfh a roller. $11011 astherollef-SS, mounted for free rotation in anend thereof; oneof-osaidrollers' (as the roller- 33). has, a, groovejformed in thefperiphery thereofifor suitably engaging the edge of a metal stack or the like.

The brace bars 26,26 are so formed as tobe suited to serve as ties between the bar 22 and the bars 21 and 23, for rigidly maintaining intended relationship therebetween when said bars are clamped together by the bolts 27 The gussets'25', 25, 25. are so formed as to be suited for similarly serving, when the bars2i, 2a, 24 are attached to the bars'21, 22 and 23.respectively, for correspondingly maintaining intended relationship therebetween.

In utilizing the embodiment of this invention which is disclosed by the accompanying drawing: if itis desired to suspend a scaffold from a parapet wall, as for the purpose of performing work on the outer face thereof, the suspension bar 21 and the guiding. bar 23 should be secured to the transverse bar 22 as shown by Fig. 1; said bars 21 and 23 being disposed substantially at right angles to the bar 22 andat such distancefrom one to the. other that roller bars 24, 24:, may be applied to said suspension and guiding bar so as to project fromeach towardthe otheri thereof and so that the'distancefromone roller to. the other in the direction of such projection will be such as tofreely receive'thethickness'of the intended wall-therebetween. "The transverse bar 22should be attached'to the suspension'bar 21' as'far above--theeye"31- aslcircumstances of use will permit having in mind the maximum' 'hei'ght" to which it should be possible to :raise such sc'a-fi'old' as fmay 'be' supported secured to the suspension bar 21 should be located as near the eye 31 as may be practicable, while locating such roller in a transverse plane in which its movement will be least obstructed by ornamental or other projections carried by the wall to which it is applied; and said roller bar should be so set as to serve as a fender for maintaining suitable clearance between the suspension bar 21 and the front face of the wall upon which the carrier is to be mounted. The guiding bar 23 should be so positioned as to project downwardly from the transverse bar 22 for a distance such that the end thereof will not be brought into engagement with the surface of a roof or other obstruction along the rear side of the intended wall. The roller bar 24 carried by the guiding bar 23 should preferably be disposed in a plane somewhat higher than that of the roller bar 24 which is secured to the suspension bar 21.

The remaining roller bar 24 should be secured to the transverse bar '22 intermediate the suspension bar 21 and the guiding bar 23, in such position as to suitably engage the top surface of an intended wall.

The gussets 25 and the tie bars 26 should be applied, as shown, so as to prevent pivotal movement between connected bars around the bolts applied at the intersections thereof.

hen a carrier has been adjusted for and applied to. a parapet wall, as shown in Fig. 1, a suitable sling or scaffold (not shown) may be connected to the rope Rand raised or lowered as desired, and transverse movement of such ascaii'old may be attained by swinging the scaffold one way. or the other soas to cause the roller 33 which is resting upon the top surface of the; wall to roll in one direction or the other, I as desired. Means other than the swinging of the scaffold may be utilized for moving .the carrier along the top of such a wall, although it has been found that, with a carrier constructed as shown, the use of such extraneous means is unnecessary under any ordinary condition of use. f

:As the carrier ,is moved lengthwise of a wall, as just described the rollers carried by the suspension bar 21 and the guiding bar 23 will keep the carrier in proper alignment withthe wall and will thereby enable the roller carried by the transverse bar 22 to pass along the upper edge of ,such'a wall from one end to. the other thereof, without the cooperation of an-assistant andw-ithout the utilization of any; appliances or equip ment other than the supporting structure shown together with a-scaifold or sling supported thereby. and the usual connecting ropes and'pulleys. d

If desired', obstructingblocks, ordthe like, may-be providedat the ends of a wall, such as that shown by Fig. 1, so as to prevent the carrier from running off from either end thereof. In the case of a wall having a tile capping or the upper surface of which is otherwise unsuited for a roller 33 to run thereon, a track comprising plank, channel iron or any other suitable and available members may be laid, end to end, along the top surface of such a wall.

If there is a cornice near the upper front surface of such a wall, the suspension bar 21 may be moved farther from thefront surface of such a wall than the relationship shown by Fig. 1 (the tie bars 26, 26 being transferred to the angles inside of the hook, if necessary) and the roller bar 24 carried by the suspension bar 21 may be extended'for a greater distance from the inner face of said suspension bar, so as to suitably engage the front surface of the wall below such acornice.

When one of the rollers is grooved, it is ordinarily preferable that such roller be placed behind any masonry or wooden wall in connection with which the carrier is used, rather than for engagement with the top or front surface of such a wall. I

lVhen such a carrier'is applied to the top of a metal stack, as indicated by Fig. 2, the grooved roller 33 should be carried by the transverse bar 22 and the parts should otherwise be adjusted for the wall of the "stack in a manner corresponding to that already clescri'bed in connection with-the wall ofFig. 1.

When devices constructed in accordance with this invention are applied to a pitch roof, such as the roof shown by Fig.3, the roller bar 24 carried by the transverse bar 22 should engage with the gutter if same is of suitable form and strength; otherwise a strip or cleat, such as the cleat O shown, should be secured in suitable relation to the edge of the roof to be engaged by the supporting roller. It will ordinarily be found that a'grooved roller, such as the roller 33', will be best adapted for engaging the edge of a gutter or the corner of a cleat, under the circumstances indicatedQ When a scaffold carrier constructed in accordance with this invention is applied to a pitch roof, as just described, one of the roller bars 24 should be secured to the suspension bar 21 to serve as a fender for the purpose of holding the suspension bar 21 out of. engagement with both the edge of the roof and the side of the building. Ifthe overhang of the roof is so great that the length of the roller bars 24 is insuflicient to enable a roller carried thereby ,to suitably engage the side of the building when such a bar 24 is directly connected to the suspension bar 21, the guiding bar 23 may be applied to the suspension bar21 in parallel relationship to the transverse bar 22 and such roller bar may then be carried at the 1 end of and in parallel relationship with such guiding bar; which guiding bar will,

in such an instance, serve as an extension of such roller bar.

Should the available cleat or gutter be of a form which does not assure the retention of the supporting roller during movement of the carrier lengthwise of the roof, a second carrier should be applied atthe ridge of the roof, as shown. Such second carrier should be so adjusted that two of the roller bars will be carried by its transverse bar 22, and so that the other roller bar thereof will be secured to its suspension bar 21. A suitable rope or cable should be connected between the suspension bar of such second carrier and the transverse bar of the carrier applied to the edge of the roof, to serve as a safety line for the lower carrier, as will be well understood by those skilled in this art.

When carriers such as those shown by Figs. 1, 2 and 3 are not in use, they can be taken apart and arranged in very compact form for transportation, as indicated by Fig. 4.

lthough this invention is adapted for embodiment in parts difiering in number and form from those shown in the accompanying drawing and hereinbefore described, and although such carriers may be adapted for uses other than those illustrated and described, it is believed that, in the light of the foregoing description, such other embodiments and uses of this invention will readily occur to those skilled in this art without further illustration or description herein; and

What I therefore claim and desire to secure by Letters Patent of the United States of America is 1. An expansible scafiold supporting hook in combination with roller members arranged for attachment thereof to project various distances from and at any of various points along the length of the inner faces of said hook, whereby such rollers will be adapted to serve both for supporting and. stabilizing said hook in cooperating with the top of a wall or the like.

2. A scaffold supporting hook comprising back, seat and bill members arranged for connection in various relationships whereby the effective size of such hook may be suitably varied, in combination with supporting and fender rollers arranged for independent connection to said members to extend greater or less distances from the inner faces thereof.

3. The combination of a suspension bar, a

transverse bar, a guard bar, three roller bars,

and means for rigidly connecting said bars in various suitable relationships substantially as and for the purposes described.

4. The combination of a suspension member, a transverse member, a guard member,

roller members, gusset members, brace members, and means for connecting said members in various suitable relationships substantially as and for the purposes described.

5. In a scaffold carrier,-.an eye bar, a carrier bar, a guard bar, means for so connecting said bars that said eye and guard bars will be disposed in various suitably spaced parallel relationships and said carrier bar will be transversely disposed therebetween, and three members each carrying a roller at an end thereof and each arranged for attachment to any one of said bars so as to projecteither transversely to or parallel therewith.

6. In a scaffold carrier,an eye bar, a carrier bar, a guard bar, means for so connecting said bars that said eye and guard bars will be disposed in various suitably spaced parallel relationships and said carrier bar will be transversely disposed therebetween, and three members each carrying a roller at an end thereof and each arranged for attachment to any one of said bars so as to project either transversely to or parallel therewith, one of said rollers being grooved to receive the top edge of a metal stack or the like.

7. In a scafiold carrier,-bar members each having a series of openings therethrough in spaced relationship lengthwise thereof, one of which members is arranged for suitable connecting a scaffold thereto and each of others of which members carries a roller at an end thereof adapted for engaging the top edge. the front or the rear side of a wall, gusset and tiemembers having openings therethrough for cooperation with the openings in said bar members, and bolts for suitable cooperation with registering openings in said members whereby said members may be rigidly secured one to another so as to enclose three sides of parallelograms of various dimensions, from respective ones of the sides of which roller members will extend for suitably adjust able distances into such parallelogram.

8. In a scaffold carrier, bar members each having a series of openings therethrough in spaced relation lengthwise thereof, three of which members are so constructed and arranged as to be adapted to be variously associated so as to enclose three sides of parallelograms of various dimensions and each of others of which members carries a roller suited for cooperation with a wall surface, and means comprising bolts, tie bars and gussets, or the like, for cooperating with said openings to rigidly maintain the various relationships of intended association of said members.

In witness whereof, I hereunto subscribe my name, this 20th day of December, 1921.

ARTHUR E. CAMP. 

